Quote:
|
Originally Posted by ausastronomer
Darren/Mike,
Just to correct something in the technical specs at the beginning of the review. Darren has listed the Central obstruction as 23%. It is actually 25.2% having a 63mm minor axis secondary and a 250mm primary.
|
I was also going to say something about that and offer a further correction as well
The mirror does have a 63mm minor axis but the plastic holder which the secondary slips into adds additional thickness of the order of about 3mm, making the total central obstruction of the order of 26.4%.